This physics video tutorial explains the concept of static equilibrium - translational & rotational equilibrium where everything is at rest and there's no motion. This video contains plenty of examples and practice problems.

Here is a list of topics:

1. Static Equilibrium Problems

2. Balancing a Seesaw - Lever Problem - Using Forces and Torques

3. Torque equals force times lever arm / moment arm

4. Positive and Negative Torques - Clockwise vs Counterclockwise rotation

5. Hanging Sign Tension Problem - Finding the tension in the two cables at two different angles

6. Hanging sign attached to a beam problem - how to calculate the horizontal and vertical components of the force exerted by the hinge and pivot point

7. Hanging sign attached to a beam at an angle - determining the tension force in the cable

8. Ladder Problem - How to find the force exerted by the wall on the ladder and the horizontal and vertical components of the force exerted by the ground / floor on the ladder.

9. Ladder problem with man on top. How to determine the coefficient of static friction that prevents the ladder from sliding down - Normal force and static frictional force calculations.

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